Gen II User Manual
4-6 – Propeller Balance Chapter 4 Revision 2.2, Apr 2020
Gram Scale
An 800-gram capacity scale is included with the propeller balancing kit for weighing the washers
or trim weights used in balancing. Read the operating instructions enclosed with the scale
carefully prior to its use.
Reflective Tape
The reflective tape supplied with the propeller balancing kit is used as a tachometer trigger for
the Phototach to generate a once-per-rev pulse used in speed readings and balancing calculations.
The reflective tape (3M 7610) supplied with the propeller balancing kit was selected because of
its excellent reflective quality and performance under varied operating conditions. Using a
lower-quality tape will cause inaccurate tachometer readings or unreliable phase information.
The tape is manufactured by the 3M Company and is the only tape we recommend for use with
the system. Contact ACES Systems for replacement tape. (See Chapter 23, “Equipment and
Accessory Setup and Troubleshooting” for additional information for high RPM.)
ACES Systems Balance Placard
Placards similar to the one shown below are included in the propeller balancing kit. This, or a
similar placard, should be attached to the spinner bulkhead upon completion of balancing to
show that the propeller has been dynamically balanced and is indexed to the crankshaft of the
engine.
NOTICE: This aircraft's power train rotating
components compose an indexed assembly.
The propeller was dynamically balanced
using:
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